/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.streaming.api.operators;

import org.apache.flink.annotation.Internal;
import org.apache.flink.streaming.runtime.io.PushingAsyncDataInput;

/**
 * Base source operator only used for integrating the source reader which is proposed by FLIP-27. It implements
 * the interface of {@link PushingAsyncDataInput} for naturally compatible with one input processing in runtime
 * stack.
 *
 * <p>Note: We are expecting this to be changed to the concrete class once SourceReader interface is introduced.
 *
 * @param <OUT> The output type of the operator
 */
@Internal
public abstract class SourceReaderOperator<OUT> extends AbstractStreamOperator<OUT> implements PushingAsyncDataInput<OUT> {
}
